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Credit
Value of vaccination : being a précis or digest of evidence taken, viva voce, 1871, before a committee of the House of Commons, on the Vaccination Act, 1867. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.